Wednesday, December 3, 2014

Runt Packets

Have you ever seen runts on your switch interfaces?  What is that?  A runt is a packet that is less than 64 bytes long.  So, really, this is a problem.  In my case, on the server (which I just inform the server guys at this particular customer).  See below.  Notice that the runts and the input errors line up.  In this case, its a server issue.  But keep in mind, you dont really want to see these runts on the switch.  Call the server guys and get them to figure out what is going on.  They probably want to know about it anyway.

GigabitEthernet1/0/9 is up, line protocol is up (connected)
     5962915515 packets input, 2654018058090 bytes, 0 no buffer
     Received 1305694 broadcasts (1253405 multicasts)
     60677 runts, 0 giants, 0 throttles
     60677 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 1253405 multicast, 0 pause input
     0 input packets with dribble condition detected
     1181023696 packets output, 913878577075 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets

1 comment:

  1. Good catch!! Most likely a NIC issue...either a physical issue with the NIC (replace it), or an issue with the driver software (update it).


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